SPT-2 - Same as SP-2 except in plastic.
SPT-3 - Same as SP-3 except in plastic.
sq. - Abbreviation for square.
SR - Abbreviation for silicone rubber insulated cable, 600 volt.
SRAW - Abbreviation for silicone rubber insulated, overall glass braid, with nickel-plated copper conductor, flexible stranding, 600 volt.
SRL - Abbreviation for structural return loss.
SRML - Abbreviation for silicone rubber motor lead.
SS - Abbreviation for stainless steel.
SS Poly - Abbreviation for semi-solid polyethylene. Also abbreviated as SSPE.
SSC - Abbreviation for silver-covered strip.
SSPE - Abbreviation for semi-solid polyethylene. Also abbreviated as SS poly.
SSPS - Abbreviation for semi-solid polystyrene.
